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tests simple timing microbenchmark

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This commit is contained in:
Daniel Agar
2018-07-01 09:25:22 +00:00
committed by Lorenz Meier
parent 02d4405a62
commit 3ba97297d5
8 changed files with 253 additions and 8 deletions
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src/lib/perf/perf_counter.c
+8 -8
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@@ -458,11 +458,11 @@ perf_print_counter_fd(int fd, perf_counter_t handle)
case PC_ELAPSED: {
struct perf_ctr_elapsed *pce = (struct perf_ctr_elapsed *)handle;
float rms = sqrtf(pce->M2 / (pce->event_count - 1));
dprintf(fd, "%s: %llu events, %lluus elapsed, %lluus avg, min %lluus max %lluus %5.3fus rms\n",
dprintf(fd, "%s: %llu events, %lluus elapsed, %.2fus avg, min %lluus max %lluus %5.3fus rms\n",
handle->name,
(unsigned long long)pce->event_count,
(unsigned long long)pce->time_total,
(pce->event_count == 0) ? 0 : (unsigned long long)pce->time_total / pce->event_count,
(pce->event_count == 0) ? 0 : (double)pce->time_total / (double)pce->event_count,
(unsigned long long)pce->time_least,
(unsigned long long)pce->time_most,
(double)(1e6f * rms));
@@ -473,10 +473,10 @@ perf_print_counter_fd(int fd, perf_counter_t handle)
struct perf_ctr_interval *pci = (struct perf_ctr_interval *)handle;
float rms = sqrtf(pci->M2 / (pci->event_count - 1));
dprintf(fd, "%s: %llu events, %lluus avg, min %lluus max %lluus %5.3fus rms\n",
dprintf(fd, "%s: %llu events, %.2fus avg, min %lluus max %lluus %5.3fus rms\n",
handle->name,
(unsigned long long)pci->event_count,
(pci->event_count == 0) ? 0 : (unsigned long long)(pci->time_last - pci->time_first) / pci->event_count,
(pci->event_count == 0) ? 0 : (double)(pci->time_last - pci->time_first) / (double)pci->event_count,
(unsigned long long)pci->time_least,
(unsigned long long)pci->time_most,
(double)(1e6f * rms));
@@ -508,11 +508,11 @@ perf_print_counter_buffer(char *buffer, int length, perf_counter_t handle)
case PC_ELAPSED: {
struct perf_ctr_elapsed *pce = (struct perf_ctr_elapsed *)handle;
float rms = sqrtf(pce->M2 / (pce->event_count - 1));
num_written = snprintf(buffer, length, "%s: %llu events, %lluus elapsed, %lluus avg, min %lluus max %lluus %5.3fus rms",
num_written = snprintf(buffer, length, "%s: %llu events, %lluus elapsed, %.2fus avg, min %lluus max %lluus %5.3fus rms",
handle->name,
(unsigned long long)pce->event_count,
(unsigned long long)pce->time_total,
(pce->event_count == 0) ? 0 : (unsigned long long)pce->time_total / pce->event_count,
(pce->event_count == 0) ? 0 : (double)pce->time_total / (double)pce->event_count,
(unsigned long long)pce->time_least,
(unsigned long long)pce->time_most,
(double)(1e6f * rms));
@@ -523,10 +523,10 @@ perf_print_counter_buffer(char *buffer, int length, perf_counter_t handle)
struct perf_ctr_interval *pci = (struct perf_ctr_interval *)handle;
float rms = sqrtf(pci->M2 / (pci->event_count - 1));
num_written = snprintf(buffer, length, "%s: %llu events, %lluus avg, min %lluus max %lluus %5.3fus rms",
num_written = snprintf(buffer, length, "%s: %llu events, %.2f avg, min %lluus max %lluus %5.3fus rms",
handle->name,
(unsigned long long)pci->event_count,
(pci->event_count == 0) ? 0 : (unsigned long long)(pci->time_last - pci->time_first) / pci->event_count,
(pci->event_count == 0) ? 0 : (double)(pci->time_last - pci->time_first) / (double)pci->event_count,
(unsigned long long)pci->time_least,
(unsigned long long)pci->time_most,
(double)(1e6f * rms));